starter relay issue

What I was getting at (depending on ignition system) if some wiring mistake could be keeping it backfeed energized. HOWEVER since you are using the clutch switch, it could only be drawing current during the times the clutch is disengaged. I doubt that would be a problem

since this Duster is actually a 1974 and came with electronic ignition, I use the factory harness updated with a RB / Hemi orange box kit and added the factory clutch switch and a non factory remote kill switch...... nothing special.